var mySelf = Players[sid] = new Player(sid, 0, 0);
io.sockets.socket(sid).emit('new player', {
        sid : sid,
    player : mySelf,
    x : mySelf.x,
    y : mySelf.y
});
for(var player in Players) {
        socket.broadcast.emit('new player', {sid : sid,
        player : player,
        x : Players[player].x,
        y : Players[player].y});
}